Moving from the potato to chocolate should seem like a funny list of bad food choices, but dark chocolate is gaining ground in health. The main ingredient in chocolate, cacao, is potentially the best option for you to improve your mood, boost emotions, and to help fight off dementia conditions. The higher percentage of cacao you indulge in, the better. However, be aware that the higher percentage of cacao tends to be bitter, so find that perfect balance. Skip on the bad versions of chocolate and consider splurging on some of the fancier, fine chocolate options if you have the choice.